Breech mechanism.



PATENTED JULY 21, 1903.

IT. BQ MODRE.

BRBEGH MECHANISM.

APPLIUATION FILEDDEG. 18, 1902.

wit k 'l SHEBTS+SHEET l.

his!

N0 MODEL.

W/TNESSYES:

INKENTOR A TTOHNE Y's,

PATIENTED JULY 21, 1903.

J. B. MOORE.

BREECH M APPLICATION FILED DBO. 1 8, 1902.

ECHANISM.

7 SHBDETSSHEET 2.

HO MODEL.

III

l ll

W/ TNE SSE S:

PATENTED JULY 21, 1903.

J. B. MOORE.

BREEGH MECHANISM.

APPLICATION FILED D30. 18, 1902.

'7 SHEETS-SHEET 3..

NO MODEL.

w/ msss s;

A TTORNE YS.

7 SHEETS-SHEET 4.

A TTORNE Y S.

j v 1 15. 5 A

INl ENTOI? PATENTED JULY 21, 1903.

J. B. MOORE.-

BREECH MEOEANISM. APPLIO'ATIOF FILED DEG. 18, 1902.

NOMODEL.

WI'TNESSE S.

v I a m/w y PATENTED JULY 21, 1903 J. B. MOORE.

BREEGH MECHANISM.

APPLICATION FILED DEO.18, 1902.

7 SHEBTS-SHEBT 5.

H0 MODEL.

IN VENTOH .4 TTORNE YS.

NO. 734,347. PATENTED JULY 21,1903. J. B. 00111 BREEOH MECHANISM.

APPLICATION FILED DEO.18, 1902.

7 SHEETSSHEET 6.

um" I llullnll A TTOHNE YS.

No. 734,347. PATENTED JULY 21, 1903. J. B. MOORE.

BREEGH MECHANISM. I

I APPLICATION FILED DEC. 18, 1902.

H0 MODEL. 7 SHEETS-SHEET 7,

WITNESSES: IN VENTO/i Um'rnn Patented July 21, 1903.

JOHN B. MOORE, OF WASHINGTON, DISTRICT OF COLUMBIA.

BREECH MECHANISM SPECIFICATION forming part of Letters Patent No. 734,347, dated July 21, 1903.

Application filed December 18,1902- Serial No, 135,721- (No model.)

To all whom it may concern.-

Beit known that I, JOHN B. MOORE, a citizen of the United States,residing at \Vashington, in the District of Columbia, have made certain new and useful Improvements in Breech Mechanism, of which the following is a specification.

My invention is an improvement in the breech mechanism of guns, and has for an object, among others, to provide a mechanism in which the threads between the block and breech of the gun will be uninterrupted and cylindrical in general form and multiple, together with means for operating the moving parts of the mechanism in adjusting the breech-block into and out of position for closing the breech of thegun; and the invention consists in certain novel constructions and combinations of parts, as will be hereinafter described and claimed.

In the drawings, Figure 1 is an end elevation, and Fig. 2 a top plan view, of the breech of the gun with the breech mechanism closed. Fig. 3 is a vertical longitudinal section on about line 33 of Fig. 1. Fig. 4 is a top plan view, and Fig. 5 an end elevation, of the breech of the gun witltthe parts in the position they occupy at the end of the first removing movement. Fig. 6 is an end elevation of the gun, showing the-parts in the position theyoecupy at the beginning of the second removing position. Fig. 7 is an end elevation of theguit, showing the parts in the position they occupy at the end of the second removing movement. Figs. (Wand 7 are crosssections on about line a a: of Fig. 4-, showing the parts in the positions illustrated, respectively, in Figs. i and 7. Fig. 8 is a top plan view of the gun with the breech mechanism swung out of the gun-breech. Fig. 9 is adetail section on about line 1 y of Fig. 1. Fig. 10 is a. view similar to Fig. 9, showing the parts unlatched. Fig. 11 is a detail perspective view of the gun-breech. Figs. 12 and 13 are the threaded rings to be screwed into the gun-breech. Fig. 14 is a detail perspective view of the main portion of the swinging carrier. Fig. 15 is a detail perspective view of the operating-ring. Figs. 16 and 17 are detail perspective views of the latch-plate. Fig. 18 is a detail perspective view of the breechblock. Fig.1!) is a detail perspective view .presently described, as best .shown in Fig. 20 is a detail per spective view of the cap-ring for application to the main portion of the swinging carrier shown in Fig. 14. Fig. 21 isa detail perspective view of the rocker or rocking pittnan. Fig. 22 is a detail perspectiveview of the crank and its shaft and pinion. Fig. 23 is a detail perspective view of a portion of the handle-lever,showing the pinion to mesh with that of the crank-shaft shown in Fig. 22. Fig. 24, is a detail perspective view of the cover-plate for the latch mechanism. Fig.

25 is a partial face View of the breech, showing a somewhat dilferent construction for operating the mechanism; and Fig. 26 is an edge view, partly in section, of the construction shown in Fig. 25.

The gun-breech is threads A and left-hand threads B. By preference these threads are provided in separate rings'a and b, which are threaded on their outer circumference and screw into a threaded socket 0, formed in the breech of the gun C, as shown in Fig. 3. The gun is shouldered at C and its bore C is slightly smaller than the inner diameter of the ring a, so the said ring a, when screwed into the breech oi. the

gun will abut the shoulder 0 and the latterv will project inwardly beyond the threads A and will form an abutment.for the breechblock when'the latter is closed, as shown in Fig. 3. The ring I), having the left-hand threads B, is screwed up against the ring'a,

as shown in Fig. 3, and these rings a'and b may be secured by means of a screw 13, as shown in Fig. 3, or otherwise, as may be desired. The inner diameter of the rin b is larger than that of the ring a, ring forms an abutment for the locking ring of the drawings. By the described construction it will be noticed I provide in the breech of the gun threads for engagement by corresponding threads on thebreech-block andloeking-ring, and it will also be noticed that these threads are multiple and have a very considerable pitch, so the block and the locking-ring ently described can be turned home with but a small movement, thus facilitating the introduction and removal of the breech-block and its locking-ring as desired.

provided with right-hand 7c so the latter internal right and left hand pres- I00 be understooitl that Z prefer to prov A one. B in separate rings the breech-block I V filo not deri e to be limited in road. features of my iion io illlS detail or oone'u'ruotion. l

The hreeo'h-hloel; l? (shori'n in detail in Fig".

is: provided with r'g,

(Shown in- Fig. 19 and presently fileseribed.)

The breeclwolool: is orovided as; (Z with a, SOCilQL leading from its outer edge and preferehly formed in the threaded portion D of: said block to receive the forward projeetioo on the rocker or rocking pitmen presently described. This socket d, as shown in Fig '1", curves inwardly to receive the projection on the rocker and to hold the same when iusorted in said socket.

The locking-ring E is provided on its exterior with threads E to screw into the Lhreeuis B of. the gun-breech and also has the internal. inroads E to screw on the threads D of the i YGQCi1-blOCl and is also provided in iisouiier face with the grooves E for the inwardlyprojeotinp; lugs or projections of the operatingring (shown in Fig. 15) and has the opening e formed from ire outer face to receive the forwardprojeobion on the rocker or rock ing pitman presently described. The breechhim-k and the looking-ring are both carried by ilze swinging carrier, and it is manifest time if the looking-ring be held from axial movement; and be turned wiiih the'breechblock i5 will mm the lamer into and our, of any threads with which the breeolrhloel: may be meshed. The swinging carrier comprises the main section F (shown in Fig. i l) and The cap ring or section G. (Shown in Fig. 20.) The main. section 5? has a hinge connection at F with the gun-breech and is raboeeed on ite outer side at F to cooperate with the rablief; G in the inner face of the cap-plate G to provide a seam within which Lire operatingring ll held and can be turned, as will 06 u derstood from 3 of the (lmwing'ii The section F and t-he cap-ring" G are r-suii. ably secured trmgether by oolLs or onherwise and refrain the operating-ring in thermal pro- (looed by the robbers F and G before (ioscri'ood. This operating-ring ii is provided on ifis outer eide wiLh theri'o ll, which fits within rho ra oheis W and G and has in mildly-projecting lugsll, whioh operate in ilie grooves ii, produced in the outer face of o opei zitingwing ll, the turning: of the I. may operate to mm the lociiingiing E, the earn-e time Axial movement of ihe r eretinring ll ariii purpose of the x ingq'irig without interfering" merit the iioolcii.

.e rile reduced poriien' of ihe ope-relongsi ailing-ring iii/Ling against iil) other tlzereof and being roleisie'd "oy Elie cover-plate 5, held to the other side oi the cop-plow G, as ehown iu Figs. 1, 2, 5, G, 7, 9, and 10. The ietoirplete i also 09 hob-ween he shoulders 1-1 and H of ihe operaming-rine and ie in operation lifted by the shoulder H and by the engagement of its mesh i with one oi the tin-earls D of the looking-ring from the position shown in Fige. 7 7 0 that; shown in 6 end '6 in the operaiioo of the mechenism, presently described. The latch. plate E iis-o especial eonsirueiion,heing pro vided WlLll a body portion 1, having near iis upper end the not-eh 1 in its outer edge and the tooth 1 projecting from its inner edge and the curved web or flange l projecting from the inner edge of the hOfljJ 1 toward the breech oi the gun and operating: along the outer side of Lhe portion 11 of the operziiingring 11', While the body porLion 1 fits and operates along the outer face of the reduced portion ii of Joe operating-ring.

The eovor-eleio J is provided with the in- Werdly-open 1' soolren J, in which operates rho leicirpih ii, which is; 11oz until hy the Spring K. lower-(l the inner face of the swing ing oer ier and into (he path of the laiolv plate aorl in gioeitiosi to enter uhe notch l in said hitch-plate when the breech mogha-niem is open mm to heeraigninet the outer omi of the releasing-pin it all other limes.

A releasing-pin ii projects from Lilo breech of the gun in posibion To aliue witili the notch l in the latch-plate i and with tho larch-pin K when iUllQ breech meehainism is closed mrd. force the pin K heel: from Lilo position shown in Fig. ll) to that; shown in Fig. 9, thus re leasiifg the latch-plate from the liitolrpin, so the latch-plate om; be moved longitudinally. The pin L is' provided with a, slot i." near its end, in which 510?, the lill-(jll-DliltOhl slides up and clown after the lziioh-pin lZ haslioon released by contact with Lhe releasing-pin l], as Will he understood from Fig. 0' and '7. in the position of parts shown in Fig. 8 the latch-pin K rests in the notch i of she latchplate I and holds said laLoh-plzito from mov' ing in eithoMlireoLio-n, mid by rho abutment; of the shoulder ii ageihefi the lower eml of the latch-plate I, as well, as by Lhe engagementoi' the tooih l with the thread ii of the locking-ring, the said latch-plate holds the operating-ring H from turning in the direction of the arrow 1, (shown in Fig. 7,) so that in swinging the carrier and the attached parts to position to close the breech of the gun the operating-ring cannot move iii/the direction of the arrow 1 in Fig. 7 beyond the position shown in the said Fig. 7.

The handle-lever M has the handle M and is fixed to the shaft N, which is journaled in the bearings O of the section F ofthe swinging carrier and is provided with the bevelpinion N, which meshes with the bevel-pinion P on the shaft P, which carries the crankarm P said shaft P being journaled at opposite ends in bearingsp and p in the main section F of the swingingearrier. This crankarm P is connected with one end of the rocker or rocking pitman R, which is pivotally connected at R between its ends with the operating-ring H, so the swinging of the crankarm P can move the operating-ring in :one direction or'the other, according to the movement of the crank-arm and the position of the parts. This rocker R is provided on opposite sides of its pivot R with fingers or projections R and R which move alternately as the pitman R is rocked into engagement with the parts with which they cooperate in the manner more fully described hereinafter.

WVhen the swinging carrier and its attached parts are swung to wideopen position, as shown in Fig. 8, the breech-block, lockingring, pitman, crank, latch, &c., will occupy the relative position shown in Fig. 7. In this figure the crank P abuts a shoulder-stop P on the carrier and cannot swing outwardly at its lower end, the latch-plate rests at its lower end against the shoulder H of the operatingring and is held from upward movement by the engagement of the latch-pin K in the notch 1 and the finger R of the rocker proring and into the socket (Z in the breech-block, so said breech-block will be held from axial movement. It will then be seen that the operating-ringisloeked from movement circumferentially with the carrier in either direction, being held from movement in the direction of the arrow No. 1, Fig. 7, by the engagement of its shoulder II with the lower end of the latch-plate, the latter being locked by the I latch-pin to the carrier, and from movement in the direction of the arrow No. 2 by its connection with the pitman R and crank P the latter abutting the shoulder-stop P", before described. When in this position, the carrier and its attached parts may be swung back and forth (see Fig. 8-) without varying the relative positions of the breech-block, locking and operating ring in the carrier until such time as the latch-pin is released from thelatch-plat'e. Itshonld be understood that I do not mean that the finger R when in the position shown inFigs. 7 and 8 positively locks the breech-block from any movement whatever, but only thatit holds the said breech-block from any substantial movement, andi; will be understood that in practice the ends of the threads onthe breech-block may be slightly rounded, if necessary, to insure their entering or properly engaging the threads in the gun-breech. If, therefore, in operation the carrier, &c.,'be swung from the position shown in Fig. 8 to set the carrier against the breech of the gun and to bring the threads D of the breech-block into engagement with the outer ends of the threads A of the gun-breech, the releasing-pin on the gun-breech will release the latch'pin and will adjust into such position that the latch-plate can enter the slot L of such releasing-pin to hold the carrier to the breech of the gun during the opening and closing movements of the block, and I then provide in connection with a latch-plate on the carrier a pin, aiso in the carrier, by which to lock the latch-plate from movement in the carrier, and a pin on the gun-breech for freeing the latch-pin from the latch-plate and to engage the latchplate,- and so hold the carrier to the gun-breech during the opening and closing movements of the breech-block. When the carrier is adjusted against the breech of the gun and its latch-plate is released, the movement of the handle-lever toward the gun to the points shown in Figs. 4 and 5 operates to turn the breech-block into the threadedportion A of the gun-breech. This is accomplished by the turning of the locking-ring on the threads D of the breech-block, when the threads D of the block engage the outer ends of the threads A of the gun-breech and while the said locking-ring is held from movement longitudinally or in an axial direction by reason of the projection R of the rocker R operating in the opening (Z in the locking-ring. When the parts reach the position shown in Figs.

.4 and 5, the block has been screwed home by jects through the opening 8 in the lockingthe turning of the locking-ring in the direction indicated by the arrow No. 1, Figs. 7 and 5. It will be understood from Figs. 5 and 7 that while the'block is screwed into the threads A the finger R is adjusted from the inner position (shown in Fig. 7) to the outer position (shown in Fig. 5) to permit the axial movement of the breech-block within the locking-ring. The further movement of the crank P in the same direction after freeing the projection R from engagement with the locking-ring reverses the movement of the operating-ring and locking-ring, throwing the projection R" of the rocker R through an opening (1 in the locking-ring to position to bear in front of the breech-block, so the latter cannot move out, and turns the lockingring in on the threads I) of the breech-block and in the threads B of the gun-breech and brings all the parts to the position shown in Figs. 1, 2, and 3. It will be understood that the adjustment of the finger R in front of the breech-block is only momentary and during the turning of the locking-ring in on the breech-block and for the purpose of prevent- IfC any outward movement of the breechbloci: until the threads of the locking-ring nave commenced to screw into the threads B of the gun-breech. It is manifest that if the hnger El be adjusted into engagement with the breech-block, so as 'to hold the latter either from longitudinal or rotary movement, the said block will be held from screwing in either direction. It will also be understood that in the position of parts shown in. Fig. 7 the spur l of the iatclrplate enters the thread of the locking-ring and holds the said ring from turning. In this position it will be seen the breech-block is screwed into the breech by a thread inclining in one direction and the lockingring is screwed on the block and in the breech by threads inclining in the opposite direction, so that the block cannot be displaced by an endwise force or pressure. The o i-ening of the breech mechanism is effecte. by an operation the reverse of that just c'iescribed. As before suggested, in Figs. 1, 2, and 3 the ports are shown in the position they occupy when the breech is closed by the breech mechanism. To remove the mechanism, the handle is swum outwardly from the position shown in Figs. 1, 2,8,11Ll 3 to- Ward that shown in Figs. i and 5. This movement, by turning the locking-ring on the breech-block, uili adjust the locking-ring outwardly and turn it out of its threads 13 in the breech, completing the first removing movement and bringing the parts to the positien shown in Figs. l and 5. From the position shown in Figs. 2 and the hand-lever is operated to move the crank to the position shown in Fig. (3 and finally to that shown in Fig. 7, in which the breech-block has been adjusted outwardly and the latch-plate has been lowered to a position in which its notch i registers with the releasing-pin on the breech of the gun, so the breech mechanism can be swung open. from. the position shown in Fig. 2- to that shownv in Fig. 8.

As best shown in Fi s. i, 5, 6, 7, 6, and 7*, the face of the retain ring G is cutaway at G to permit the travel of the. latch-plate.

in Figs. 25 and ill the crankshaft 10 has a worznnvheel 1i, meshed by a worm 12 on a shaft 13, having a handle Li, and. it will be understood that this construction may be preferal'iie for very heavy guns on shipboard.

Having thus described my invention, what iclaiin as new, and desire to secure by Letters Patent, is-

l. A breech mechanism comprising abreecliblock provided on its outer side with the right and left and threads, one-of which is arranged; to screw into the gun, and a lockin g ring screwing on the other thread of said block.

2. In a breech mechanism a breech-block provided with the exterior multiple right and left hand threads.

A breech mechanism comprising a breechbloch provided with nninterrupted right and left inulti ilo threads one off which screws into the breech of the gun, a locking-ring operata ing on the other threads, a hinged carrier in which said locking-ring is supported, and means carried by the hinged carrier for turning the locking-ring.

4. A breech mechanisin comprisinga breechblock having series oi right and left hand threads, the threads of one series beingadaipt: ed to screw into and ont of the gun, and ring threaded on the other series of threads and arranged to operate the biock.

5. A. breech mechanism comprisinga breech: bioek having right and left hand threads the locking-ring screwed on one of the threads, a carrier in which the locking-ringis movable .circumferentially and axially, and means whereby the ring may at intervals be held from axial movement in its carrier to cause its revolution to move the breechblock longitudiually.

6. The combination of the swinging carrier, the operating-ring swinging with and arranged to turn in the carrier, the breech-block and looking-ring supported in the swinging carrier and Within the operating-ring and turning the hand'lever, gearing between the hand-lever and ring whereby the ring may be turned by the hand-lever, and locking means for holding the ring from turning in the carrier whereby the hand-lever may onerate to swing the carrier, and means for releasing such locking means to permit the turning of the operaliug ring by the movement of the hand-lever.

7. A. breech mechanism comprising a breechbloek having right and left hand threads, the locking-ring screwed on one of the threads, a carrier in which the locking-ring is movable eircumferentially and axially, an operatingring movable bodily with and arranged to turn relatively to said carrier and provided with'means engaging with the locking-ring whereby to iurn-the-same, means for turning the operating-ring and means carried by the operating-ring for engagement at intervals with tlie'locking-ring whereby to prevent the same from longitudinal movement or move ment in direction of its axis. i

S. A. breech mechanism comprising a swinging carrier, an operating-ring movable bodily with and turningrclatively to the carrier and having projections extending from its inner projection movable into and out of engage.

ment with the locking-rin 9. The combination of the swinging carrier, the operating-ring carried thereby, the lockingu-ing wi hin the operating-ring and having internal threads for engagement with those of the breech-block, tliebrcech-block operating in the locking-ring and having right 5 block at intervals from longitudinal movement or movement in the direction of their axes.

10. In a breech mechanism substantially as described, the combination with the breechblock, the locking-ring threaded thereon and the operating-ring, of the operating devices including a pitman pivoted to the locking ring and provided on opposite sides of such pivot with fingers or projections movable respectively into and out of engagement with the locking-ring and the breech-block whereby such ring and block may be held at intervals from movement in the direction of their axes.

11. The combination with the breech-block and the locking-ring of the operating-ring, and the operating devices including a crank and a pitman connecting the crank with the locking-ring, the crank and pitman being so related to each other and to the operatingring that the latter is turned first in one direction and then in the other by a swinging of the crank in one direction.

12. The combination with the breech-block and the locking-ring, of the operating-ring, the swinging carrier in which said parts operate, means for locking the operating'ring from turning in the carrier, and devices. on the gun whereby to release said locking means when the breech mechanism is adjusted to position against the breech of the gun and to engage with parts in the carrier to secure the latter against the breech of the gun.

13. The combination of the breech-block having right and left threads, the lockingring operating on one of said threads, the opcrating-ring encircling the locking-ring and provided with means for turning the said locking-ring, and the. operating devices includinga pitman pivoted to theoperating ring and provided on opposite sides of its pivot with projections to engage respectively with the locking-ring and the breech-block.

14. The combination with the gun-breech having internal right and left threads, of the breech block having threads turning into one set ofthreads of the breech, and the lockingring connected with the breech-block and threaded. into the other set of threads of the gun-breech, v v

15. The combination with the gun-breech having'right and left threads, of the breech- -block having right and left threads one set of which is arranged to screw intothe inner threads of the"gun-breceh, and the lockingring having internal threads screwing on the outer threads of 'the breech-block, and extermalihreadS screwing in the miter threads of the gun-breech.

16. A breech mechanism comprising a breech-block having right and left threads, a locking-ring meshed with one set of threads of the breech-block, ahd a rockerpivoted between its ends and movable at one endinto engagement with the locking-ring and the breech-block and at itsother end into engagement with thebreech-block.

17. Thecombinatiou in abreech mechanism with the gun-breech, the means for closing the breech, and the swinging carrier, of a latch-plate movable inthe carrier, a pin carried by the carrier whereby to engage with said latch-plate when the carrier is swung to open position, and .a pin on the gun-breech for engagement with the latch-plate when the swinging carrier is closed.

18. The combination of the gun-breech having right and left threads, the swinging carrier, the breech-block and locking-ring supported in the carrier, the operating-ring supported in the carrier, a latch-plate, a latchpin supported in the carrier and engaging with the latch-plate, and a releasing-pin on the gnu-breech for releasing the latch-pin from the latch-plate.

19. In a breech mechanism substantially as described the combination of the carrier, the operating ring movable circumfercntially therein and provided with inwardly-projecting portions or lugs, the breech-block having right and left threads, the loc-kingring threaded internally on the bre ch-block and provided in its outer side with grooves extending longitudinally of the ring and receiving the lugs or projections on the operating- .ring, and means formoving the operating ring.

20. The combination in a breech mechanism, with the swinging carrier, the'operating- -ring, and the parts operated by said ring, of shoulders or abutments on the operating-ringand spaced apart, and the latch-plate arranged and operating between said abutments and provided with a notch to receive the latch-pin and the latch-pin spring actuated into said notcl1,and means for releasing the latch-pin.

21. The combination of the gun, breechblock, the locking-ring threaded thereon, the operating-ring on the locking-ring, means for turning, the locking-ring by the movement of the operating-ring, means whereby the turning of the operating-ring in one direction may operate to turn the breech block into the breech of the gun and whereby the turning ofithc operatingring in the reversedircctinn may operate to turn the locking-ring into the gun.

22. The combination with the swinging carrier of the breechblock and lockingring therein and the operating-ring turning in the carrier and upon the locking-ring and means for turning said operating-ring.

23. 'lhecombination with the swinging carrier and the crank and its shaft, of the operating-ring in the carrier, the devices within and arranged for operation by said ring and the pitman connecting the ring and crank, the latter being arranged to move past the center or line of fake pitman and turn the0peraing ring; first in one and tb.z"i11 the opposim dimsiiozi in Goth opening and closing the breech ixwchmiism Theeomhinaiian with ihesv g iingingcar- Tier the operatingaing tiiergaih and having A reduced pmbion, of we latch-plate having body pmtion opsmiing along we outer faca of, an Wabopsmiiing ("dong tbs ouhmr of such reduced povtion and pmvided n a zzotzsh f0? aim Mick pin, The iatch-pin .110. means f0? releasing Cue latch-pin.

25. Th6 combination with the swingiugeurrim. the breech ciosing iisvicess operating iwi'ein and time for turning ch-siosing devices f0 1 Making the operas".- ng fmm movem'anii in 6116 carrier 3.8Iii 81'if'ifidjusted clear 0'? the gun-breach. :26. "E219 amnbinmion Wiin the gun-smash 221d the swinging carrier, of breech-closing devices 'opez'ajcmg in the carrier, the 0pemting-riug far awning-'3 (i devices, 1219mm izidepemi wnb 0 than devicea for Packing ti 3 from mo imam in bile carrier iii i-i biez'is aiijusi'ed clear 0f she gun-breech and; reieasing iiwvices on tha gu in'ieech fer Wa ing said ieckiap; devices when iheem-rieris ad 'ustsd againsi; the gim breech. 27. Qnecom ninabreech mechanism swinging emu 1923-1139 bxsach.-biock, the

g -1'ing swim eamim', and upon tha hraesEz-biock, and in tin'ead the, ia/cch-ggiaiqs, hfiv' v with the external threzi Wat-in, 1, the

me said Eek-flees, of means indespemieno of me the rocking piimam pivoted is i 28. The cembirmfiisn of the gun pvm ifieafii itm breech with aha uninievrupbed inniiip "right and left threads, the bmeclrbiosk "Eng iha external rightand Raft animal-mate multiple tinea-zis, 3-138 set being foimefl. in mm into the inner threads of tha g1:n-brsecii locking-ring having infiex-nai time? 1 S2:- ing on fine outer 1311 reads of the 0m I and external threads screwing into tbs 611. threads of the gun-breech.

29. The combination sf tha locking-ring hm ing; an 0 sning' formed tin-0113111 it, fi'ne breechblock in said lockin g -ring and having a socket which 1e.gisters with the epening in bheiocking-ring when the breech. mecim ism is in own position, the carrier "for said par-ts the operating devices having a finger or projection eperaiingz in the said opening and socks: when the breech mechanism is in gusition.

30. Thecombination of the .un-bi'eech ham ing the sepm'aiie' sings pi'OVidEi. with Pi '5 and left hand threads and screw: i separa: -13;

having e1.- ws, the i001:-

-hiock ami iiamai right and left hams. i ing-ring threaded 0n the in having" external 'ihreas ":0 so

she latch mechanism suppovtaw spam ring, 119 operating mania shafa, Lia-e Ever geared tberiswith and 019 iatahselamiug: pin 0n the gun-breech.

"Witnessfis:

SOLON C. KEii-iON,

PERRY B. TURPEN. 

